If you want to make it logical, then make it 8 conferences of 10 teams each and they each play every team in their conference. Notre Dame doesn't play in a conference because it makes more money that way. The rest of the teams play in super conferences because they make more money that way. There is nothing noble about playing in these huge conferences containing teams from all over the country just like there is nothing noble about Notre Dame being independent. If you are trying to get the best 12 teams in a playoff, it shouldn't be about what conference you're if in you aren't playing half the teams in your conference.